I've just noted the same issue with SV405cc. I'm running Ubuntu 22.04.3 with indi-svbony package 1.3.8+t202310010705~ubuntu22.04.1 installed on an Odroid (aarch64). The very first capture after connecting to the camera is fine... but the second has poor signal to noise. I had not noticed further degradation after the second frame, but I couldn't rule it out. After disconnecting and reconnecting, the behavior repeats (good first image, bad subsequent images). I had used this camera successfully several weeks ago... so something changed in recent updates to this driver. :<

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